Ic303 System Control (Cxp84332-Q27Q) - Sony CDP-CX250 Service Manual

• IC303 SYSTEM CONTROL (CXD84332-027Q)
Pin No. Pin Name
1 A3
2 A4
3 A5
4 A6
5 A7
6 A12
7 A14
8 A11
9 A10
10 A9
11 A8
12 A13
13 WE
14 LED1
15 LED2
16 CE
17 DOOR SW
18 SCLK
19 SRDT
20 MODE
21 BUSOUT
22 LDOUT
23 LDIN
24 TBL.L
25 TBL.R
26 S.RST
27 FL.DATA
28 FL.CLK
29 LDON
30 RESET
31 EXTAL
32 XTAL
33 V
SS
34 TX
35 TEX
36 AV
SS
37 AVREF
38 I.SENS
39
CD 1/2/3
40 D.SENS
I/O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM address
O
SRAM write enable
O
PLAY LED control H: Lighting up
O
PAUSE LED control L: Lighting up
O
SRAM enable
O
Front foor switch H: Open
I
Clock for CD-TEXT
O
CD-TEXT data
I
CD-TEXT IC control
O
CONTROL-A1 out
O
Loading motor PWM output for outside direction
O
Loading motor PWM output for inside direction
O
Table motor PWM output for left turn
O
Table motor PWM output for right turn
O
Power control H: Power ON
O
Data for fluorescent indicator and LED control
O
Clock for fluorescent indicator and LED control
O
Laaser diode control H: ON
O
Reset input L: Reset
I
X'tal Oscillation (10MHz)
O
X'tal Oscillation (10MHz)
I
Connect to ground
–
Open
–
Connect to ground
–
Connect to ground
–
Connect to +5V
–
Table motor current detect
I
Command mode switch
I
Disc sensor input Less than 3V: Existing disc
I
— 28 —
Function
H: Active
More than 3V: Avnormal condition